/Engine/Source/Runtime/Core/Public/Misc/QueuedThreadPoolWrapper.h
InPriorityMapper Thread-safe function used to map any priority from this Queue to the priority that should be used when scheduling the task on the underlying thread pool.
FQueuedLowLevelThreadPool ( [TFunction](API\Runtime\Core\GenericPlatform\TFunction)< EQueuedWorkPriority(EQueuedWorkPriority)> InPriorityMapper, [LowLevelTasks::FScheduler](API\Runtime\Core\Async\Fundamental\FScheduler) * InScheduler )